Double twist twisting spindle



Dec. 24, 1935.

W. LENK DOUBLE TWIST'TWISTING SPINDLE Filed Feb. 9 1935 2 Sheets-Sheet lhwy/02':

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Dec. 24, 1935. w LENK DOUBLE TWIST TWISTING SPINDLE Filed Feb. 9, 1955 2Sheets-Sheet 2 Patented Dec. 24, 1935 OFFICE ammo DOUBLE TWIST 'rwrs-rmcsmmm Wilhelm Lenk, Remscheid-Lennep, Germany, assignor to BarmerMascliinenfabrik Aktiengesellschaft, Wuppertai-Oberbarmen, GermanyApplication February 9, 1935, Serial No. 5,831 In Germany February 17,1934 2 Claims.

This invention relates to a double twist twisting spindle on which theyarn receives two twists at each spindle revolution.

In the known spindles of this type the stationary supply spool holder ismostly removably mounted on the twisting spindle to enable fresh supplyspools to be slipped on from the outer sides of the machine. For theslipping on of fresh spools or of a completely filled holder forsupplying spools it is necessary to stop the twistingspindle which ishollowfor threading the threads therethrough. The threads are then to bethreaded through the spindle by means of a threading wire and can thenbe conducted over the likewise stationary thread guide to the windingspool.

This spindle construction is open' to the objection that its attendanceis very inconvenient and wastes time; moreover each individual spindlemust be equipped with a stopping device which on the one handconsiderably adds to the cost of the machine and on the other hand makesthe attendance of the machine more diilicult. Consequently by thisconstruction the-rentability of the machine is considerably reduced asthe machine is idle for too long periods.

The object of the invention is to reduce these idle periods of themachine to a minimum and to reduce the cost of manufacture in order tothereby increase its rentability.

The invention consists in that the stationary supplying spool holdertogether with the rotating upper part of the spindle comprising the ringtaking up the thread and the hollow spin die is removably mounted on thedriving wharve and on the lower spindle part and connected with thelatter by clamping or friction action. Radial guide slots are preferablyprovided in the underside of the upper removable part of the spindle 4for outwardly conducting the thread coming out of the hollow spindle.

This spindle construction presents the advantage that the upper part ofthe spindle is removed for placing on fresh supply spools, so

that the filling with fresh spools and the threading of the. threadsthrough the hollow spindle can be carried out from the outer side of themachine. Thus, the idle period or the interruption of the twisting oneach individual spindle is reduced to a minimum. A further advantage isthat the rotating spindle part need no longer be stopped for placing onthe upper part because the threads are already pulled through indownward direction. Consequently, no stopping device on the spindles isrequired, which results in a considerable cheapening of the cost ofmanufacture of such machines. Briefly, it may be said that therentability of these machines is considerably improved by the invention.

spindle.

Two embodiments of the invention are illustrated by way of example inthe accompanying drawings in which:-

Fig. 1 shows a complete spindle in longitudinal section. 5

Fig. 2 is a similar view, the upper part of the spindle being, however,removed from the lower part.

Fig. 3 is a section on line III-411 of Fig. 1.

Fig. 4 shows a modified form of construction in 10 longitudinal section.

Fig. 5 is a similar view showing the upper part of the spindle removedfrom the lower part.

Fig. 6 is a section on line IV--IV of Fig. 4.

The double twist twisting spindle is composed 15 of a spindle I, awharve 2 rigidly connected with the spindle, an upper part 3 removablymounted on the spindle I but connected therewith by clamping or frictioneffect and consisting of a ring for taking up the thread and a hollowspin- :0

dle, and a supplying spool holder 4 loosely mounted on the upper part 3.The upper part 3 participates in the rotation of the spindle I, whereasthe supplying spool holder 4 remains stationary. In the iorm ofconstruction illustrated 25 in Figs. 1 to 3 the hollow spindle in theupper part 3 has slots 6 in its lower end for the passage of thethreads, whereas in the upper part a hollow cone 1 is arranged forkeeping the threads away from the spindle. In the form of construction30 illustrated in Figs.. 4 to 6 the hollow spindle consists of a tube 8which is likewise slotted at its lower end for guiding off the thread.

The upper part 3 of the spindle is rotated either by friction orclamping effect which lat- 35 ter is produced by a cone 8 or illrespectively. For taking up the thread segments II are provided whichproject from the under side of the removable upper part and form radialslots l2 0 for outwardly conducting the thread passing out of the upperpart.

I claim:-

l. A double twist twisting spindle, comprising in combination a lowerspindle part, a wharve 45 rigidly connected with said lower spindlepart, a rotatable upper spindle part composed of a ring for taking upthe thread and of a hollow spindle removably mounted on said lowerspindle part and connected therewith by friction, and a sta- 5o tionaryspool holder mounted on said hollow spindle and removable with saidupper part.

2. a double twist twisting spindle as specified in claim 1, in which theremovable upper spin dle part has slots in its lower end conducting l5outwards the thread passing out of the hollow

